error-120ES4194dn

OKI ES4194dn error 120: Troubleshooting Guide

The OKI ES4194dn error 120 is a common feeding fault. It happens when internal sensors detect that paper is not flowing correctly through the machine. To resolve the OKI ES4194dn error 120, check the paper path for obstructions and perform a manual reset.

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Common causes

  • 1Physical paper jam in fuser.
  • 2Worn-out rubber rollers.
  • 3Damp paper causing feed friction.
  • 4Dirty paper sensor.

Solutions

Diagnóstico rápido

If the OKI ES4194dn error 120 appears, check if you hear grinding sounds or if the printer tries to feed paper without success.

Solución paso a paso

  1. Turn off the printer.
  2. Open front and rear covers.
  3. Carefully remove all paper fragments.
  4. Close everything and restart.

Prevención y mantenimiento

Use good quality paper. Keep rollers clean to avoid feeding errors.

Cuándo llamar a un técnico

If the error persists after checking for debris, the sensor may be faulty and needs professional repair.

Ficha técnica del equipo

  • Technology: Digital LED
  • Speed: 40-42 ppm
  • Connectivity: Ethernet / USB
  • Compatible Consumables: ES4194 series toner
  • Recommended Use: Enterprise office
  • Official Drivers/Firmware

Steps to follow

  1. 1

    Check covers

    Open front and rear covers to inspect paper path.

  2. 2

    Remove paper

    Gently pull out any stuck paper fragments.

  3. 3

    Close covers

    Ensure all access panels are securely closed.

  4. 4

    Resume

    Press the continue button to resume printing.

Frequently asked questions

This indicates a paper jam that was not cleared by the printer sensors.

Yes, ignoring it can damage the fuser or rollers.

It uses standard ES4194 series toner cartridges.

Perform a cleaning cycle every 50,000 prints.